Sadiron



G. FINN `lune 7, 1932.

SADIRON Filed Aug. 9, 1930 Patented June 7, 1932 PATENT orrlcs GEORGE FINN, 0F NEWARK, NEW JERSEY SADIRON Application filed August 9, 1930. Serial No. 474,108.

T his invention relates to improveme-nts inv sad irons which are hollow and are heated from the inside and preferably wherein the body of the same is ellipticalin shape longi- 5 tudinally so as to provide tapering ends. In my prior Patent No. 1,203,515, granted October 31, 1916, there is disclosed such an iron having interior downwardly extending side flanges making long flues which do not tend to provide proper air distribution to the fuel because the lower edges of said flanges are straight and close to the bottom of the iron. It is an object of the present invention to overcome the deficiencies of such flanges and to provide other improvements over those disclosed in said patent.

Sad irons of the type referred to are usually so constructed as to properly burn a carboniZed composition fuel which is preferably used in nugget form inasmuch as it does not smell or smoke.

An important object of the present invention is to provi de air distributing means along the sides of the iron and within the heating chamber, and which are grate like so as to provide openings for the admission of air to the fuel, practically from end to end of the iron, while at the same time to guard against the fuel clogging up such air distributing means, and to properly heat the side edges of the bottom of the iron.

Another object of the invention is to provide an improved cover for the iron, which is provided with dampers tending to hold the heat in the iron, such dam'pers being operable by means of one operating lever.

Another object of the linvention is to provide an improved lock for holding the cover in position on the iron.

Still other objects of the invention are to provide a simple, efficient and thoroughly practical self-heating sad iron.

These being among the objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawing illustrating a desirable embodiment of the invention and wherein y Figure 1 is a side elevation, the dampers being adjusted to a desirable .position after` the burning of the fuel has been well started;

Fig. 2 is a cross-section of the iron through its mid-length;

Fig. 3 is an interior plan view of the main body of the iron; Y

Fig. 4 is a longitudinal section of the iron, and

Fig. 5 is a bottom plan view of the cover of the iron. s p

In the drawing, the body 10 of the iron is hollow so as to provide a heating chamber, such body being open at the top.. The body 10 is elliptical longitudinally so as to provide corresponding pointed ends, and the entire body preferably consists of a single casting of metal which may readily be Ydrawn from the sand. A flat cover plate 11 preferably consisting of a single casting is provided, the same being` of suoli size as to fit removably on the upper edge of the body 10.

Cover plate 11 is provided with a side stud 12 which projects at right angles to a depending lug 13 located at approximately the midlength of the cover. At a corresponding point at the other edge of the cover it is provided with another depending lug 14. The object of these lugs 13, 14 and study 12 is to enable the cover to be fixed in position on the body of the iron. vIn order toset the cover in position, the same is tilted so as to engage the stud 12 in a hole in the corresponding side wall of the body 10, and when the cover is caused to rest flat upon the body, a pivot pin 15 of the keeper 16 is introduced through registering holes in the opposite side of the iron and which holes constitute a bearing 15a for the pivot pin. a

Keeper 16 is preferably formed from a piece of wire which is bent in some such shape as shown in Fig. 2 so as to form the inward hook 17 which is adapted to engage over an upright flange 18 atthe corresponding edge of the midlength of the cover. The pivot pin 15 is adapted to be pushed inwardly through the bearing 15a after the hook 17 has been moved so that it will clear the uppersurface of the cover, when the pivotpin is so pushed. At this time the keeper 16 may be swung towards the flange 18 so as to engage its hook 17 therewith, the edge of the flange being curved or cammed, so that when the keeper is set in the position shown, the pivot pin 15 cannot move out, and the body 10 and the cover are held locked togeth er. Tf desired the piece of wire used may have some resiliency so that the hook 17 will have a springy engagement with theflange 18.

Extending upwardly in longitudinal alignment along the mid-length of the cover 11 are a pair of posts 19 which have flat tops upon which may be set the mounting frame 2O of the handle 21. Rivets 22 pass through the lower portion of the frame 20, through the posts 19, and are headed at their lower ends against bosses 11a cast with the cover. Thereby the handle is rigidly and permanently secured in position, and as is obviously the case it may be insulated against the heat passing through the metal of the parts.

The body 10 of the iron is provided at each side with a large air inlet opening 23 which is located contiguous to the bottom of the iron.y These openings may be controlled by means of dampers 24 located outside the iron and mounted upon pivots 25 which extend from opposite sides of the iron. Friction springs 26 are coiled about the outer extremities of the pivots 25 and are contained within cups or hubs 27 formed integrally with the dampers. Inasmuch as it is the tendency of such dampers not to fit snugly so as to absolutely close the openings 23 when desired, the present invent-ion contemplates the provision of tail extensions 28 cast with the dampers and extending in opposite direction from the pivots. In such ca se the sprin cannot move the dampers outwardly away from the openin gs 23, because the tail extensions 28 would then bear upon the outer surface of the iron, tending to prevent an outward tilting of the dampers. These tail extensions 28, together with the springs 26, provide the desired friction for holding the ,i dampers 24 in the position to which they may be adjusted for the regulation of the effective size of the air inlet openings 23.

A transverse flue 29 is cast with the body of the iron, and it is located directly above the bottom of the iron and at the approximate mid-length thereof. Portions of the heating chamber lie on both sides of the flue which is continuous and is exposed to the heating chamber at its top and both sides. This flue i. 29 extends from side to side of the iro-n so that air entering the side openings 23 will pass into the flue. A longitudinal opening 30 is provided at each side of the flue 29, the same being located directly at the bottom of the iron and being preferably of a height somewhat less than half the height of the flue. These openings 30 permit air for combustion to pass into the fuel from opposite sides of the flue. Laterally of the extreme ff ends of the flue 29 it is provided, at points directly communicating with the air inlet openings 23, with end openings 31 which extend transversely of the flue, just at the inner surfaces of the side walls of the body of the iron. These lateral vertically arranged end openings 31 lead some of the air for supporting combustion to air distributing means at opposite sides of the iron.

The air distributing means referred to comprises distributor flanges 32 which arecast integrally with the body of the iron and extend along both sides of the iron, from opposite sides of the flue 29. These distributor fianges 32 are arranged at a distance above the bottom of the iron, to about equal the height of the flue 29. They extend to nearly the points of the body of the iron and are formed with parallel downwardly extending guard fingers 33, which terminate at a slight distance above the bottom of the iron. These guard fingers 33 constitute a sort of grate or barrier to prevent the nuggets of fuel getting in underneath the distributor flanges 32, so that the semi-fines provided between the guard lingers and the adjacent side walls of CT:-

the iro-n are not clogged up and air is permitted to pass through the spaces 34 between the guard fingers in order to support combustion of the fuel directly adjacent thereto. ln this way the opposite portions of the bottom of the iron are assured of being heated by the combustion of the fuel at these points, so that the entire body of the iron is properly heated all over.

Plate slide dampers 35, 36 are mounted on 151'? the underside of the cover 11 for the purpose of assisting in controlling combustion in the heating chamber. One end of the cover is provided with a series of small openings 37 extending around it, and the other end is 1-' pro-vided with a similar series of openings 33. These are located near the edges of the cover. Larger side openings 39 are provided in the surrounding depending flange ll() of the cover plate, such flange having an outline conformll ing to the outline of the body 10 of the iron, so as to seat squarely upon the upper edge of said body. The openings 39 are arranged in pairs, one pair at each end of the cover. The

outer edges of the slide dampers 35, 36 are A f pro-vided with depending flanges 11 which are adapted to afford baffles to the products of combustion passing directly out of the openings 39 and 37, 38. These flanges extend below the joint between the cover and the body of the iron so that the products of combustion will not pass out at these points.

On the underside of the cover there is arranged an oscillatory disk member 12 which is firmly secured to the lower end of a square pivot pin 43 which pin extends through and has a bearing in a suitable hole in the central portion of the cover. At this point the underside of the cover is provided with a boss 43a similar to the bosses 11a, and all of these bosses are of a height approximately equivalent to the thickness of the slide dampers 35, 36. The oscillatory member 42 is thereby spaced away from the cover plate for a distance approximately equivalent to the thickness of the slide dampers. In the oscillatory member 42 curved slots 44 are provided which are concentric with the pivot pin 43, and into these may extend the lower extremities of the bosses lla and the upset lower ends of the rivets 22, so that the member 42 may be oscillated without interference thereby. It will be seen that opposite edges of the slide dampers 35, 36 are fruided by and between the adjacent side wall of the body 10 on th-e one hand and the bosses llc; on the other hand so that the dampers may move in straight lines between the member 42 and the cover plate. Slots 45 radial of the pivot 43 are formed in the member 42, and pins or studs 46 on the dampers enter the said slots, thereby forming a connection between said member and the dampers.

The upper end of the pivot pin 43 has fixed thereto a hand lever 47, which projects outwardly from between the cover plate and the frame 2O of the handle. It is clear that when the handle 47 is rocked in one direction or the other the dampers 35, 36 will be slid towards or away from each other, thereby regulating the openings 37, 38, 39 in the cover in the desired manner, to control combustion in the heating chamber.

On reference to Fig. 5 it will be observed that the slide dampers 35, 36 are similar to each other, being preferably formed from identical castings. They are lop-sided as it were, the inner ends thereof at each side being prolongated sufliciently so as to cooperate with the bosses 11a and with the oscillatory member 42.

From the above description in connection with the drawing the utility and advantages of the invention will be apparent to those skilled in the art and is to be distinctly understood that the invention is not limited beyond the scope of the appended claims.

What I claim as new is:

1. In a sad iron, the combination of a body having a heating chamber, and a transverse flue extending continuously across the chamber intermediately of the length thereof, the body having air inlet openings located at the ends of the flue, and the flue having openings leading to the heating chamber.

2. In a sad iron, the combination of a body having a heating chamber, and a transverse flue in and located at the bottom of the chamber and extending continuously across it, the body having air inlet openings located at the ends of the flue, and the flue having intermediate longitudinal side openings leading to the heating chamber and located directly at the bottom of the body.

3. In a sad iron, the combination of a body having a heating chamber, a transverse flue in the chamber yinter-mediate -the length thereof, the body having ai=r inlet openings located at the opposite ends of the flue, and the Aiiue having, just within the opposite side wallsof the body, openings leading to the heating, chamber, and distributor flanges extending from the op enings of the yflue toward the ends of the bod 1 In a sad iron, the combination 4of a cast metal body having aheatingchamber, a transverse flue having its walls cast with the chamber intermediate the Vlength thereof, the .fbody having air inlet openings located at the opposite ends of the flue, and the flue having vopenings leading to the heating chamber, and. distributor flanges cast with the body extending from some of the openings of the flue toward the" ends of the body, said flanges .having spaced guard 'fingers extending down toward the bottom of the body.

.5. A sad iron having a .heating chamber anda transverse air vflue .located therein at the approximate mid-length vof the body -of the iron and exposed to the chamber at its top and sides, the flue 'having air inlet openings at the outside of the iron and also Ahaving communication, between its open outer ends, with said heating chamber for admitting air thereinto.

6. In a sad iron, having a heating chamber, a cover for A'the'chamber and having top openings, an oscillatory disk pivoted to the underside of and spaced away from the cover and provided with an operating handle outside the cover, and slide dampers at the underside of both ends of the cover and located above the disk, for controlling the size of said top openings, and which dampers are connected with the oscillatory disk for operation thereby.

7. In a sad iron, a body having a heating chamber, a cover for the chamber and having top openings, the cover resting on the body, and the chamber having lateral upper openings, an oscillatory member pivoted to the underside of the cover and provided with an operating handle outside the cover, and slide dampers at the underside of both ends of the cover for controlling the size of the top openings, and having side fianges for controlling the lateral openings, and which dampers are connected with the oscillatory member for operation thereby, and the flanges extending down beyond the joint between cover and body. I

8. In a sad iron, having a heating cham ber, a cover for the chamber and having top openings, downwardly extending portions from the opposite sides of the cover, an oscillatory member pivoted to the underside ofl Cover for controlling the said top openings, each damper having substantially one lateral half formed as an inward prolongation, the prolongations being at opposite sides of the pivot and extended to aproximately the mid-length of the cover, one prolongation being guided by and between one o1n the guides and the downwardly extending portion at one side of the cover, and the other prolongation guided by and between another of the guides and the downwardly extending portion at the other side of the cover, and the prolongations being connected with the oscillatory member laterally of its pivot, for the operation of the dampers.

9. In al sad iron, the combination of a body having a heating Chamber which is open at the top, a Cover for the chamber, an upward lateral flange on the cover having a eammed upper edge, a keeper having a pivot pin journaled in the side of said body and a side portion of the cover, and also having a hook extending in the same direction as the pivot pin, for engaging over the edge of the upward flange, and additional means located at the opposite sides of the body and Cover for eonneetin g the cover with the body7 both the keeper and the additional means mutually acting to maintain the cover upon the body.

GEORGE FINN. 

